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Post-Fire Recovery Monitoring Using Remote Sensing: A Review 火灾后恢复遥感监测研究进展
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e19
N. Stankova
{"title":"Post-Fire Recovery Monitoring Using Remote Sensing: A Review","authors":"N. Stankova","doi":"10.3897/arb.v35.e19","DOIUrl":"https://doi.org/10.3897/arb.v35.e19","url":null,"abstract":"Wildfires are a common disturbance factor, while climate change is thought to be one of the main causes of the fires. The detection of disturbance and post-fire recovery monitoring are vital for ecological research. This article aims to provide a review of current research of post-fire recovery monitoring based on remotely sensed data. While a close relationship between vegetation indices (Vis) and physiological parameters of vegetation has been established, VIs have become the main tool for assessing and monitoring vegetation status. Research on the effects and recovery from fires has been conducted by a number of authors, with VIs being used mainly in the methodologies. Tasseled Cap Transformation (TCT) method is also used to assess the state of the ecosystem before and after a fire. When viewed in series, Disturbance Index (DI) images provide an immediate way to recognize the pixels of the forests affected by the fire, different from those characteristic of the normal state of forests. The incorporation of various remote sensing data with field data is able to support the monitoring of post-fire effects and forest recovery.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"62 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70395261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Using Remote Data and GIS in Research of Morphometric Characteristics of the Coastal Area in Bulgaria 利用遥感数据和GIS技术研究保加利亚沿海地区的地貌特征
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e02
G. Jelev
{"title":"Using Remote Data and GIS in Research of Morphometric Characteristics of the Coastal Area in Bulgaria","authors":"G. Jelev","doi":"10.3897/arb.v35.e02","DOIUrl":"https://doi.org/10.3897/arb.v35.e02","url":null,"abstract":"Remote methods provide information on both the natural objects on the earth's surface, water bodies, water-land boundaries, and relief and relief forms. Satellite images were used to determine the characteristics of the coastline and Black Sea area (about 50 km distance) of the Republic of Bulgaria. Its fractal dimension and curvature are determined. A number of thematic maps have been generated through the digital relief model to assist in the interpretation and geomorphologic characteristics of the study area. A database was created as part of the project MARINEGEOHAZARD – “Set-up and implementation of key core components of a regional early-warning system for marine geohazards of risk to the Romanian-Bulgarian Black Sea coastal area” from CBC Romania-Bulgaria Programme.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"26 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cosmic Ray Spectrum and Intensity in Middle Atmosphere (CORSIMA) model. Use and Application for Solar Cosmic Rays 中大气宇宙射线光谱和强度(CORSIMA)模型。太阳宇宙射线的使用和应用
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e01
P. Velinov, S. Asenovski, L. Mateev
{"title":"Cosmic Ray Spectrum and Intensity in Middle Atmosphere (CORSIMA) model. Use and Application for Solar Cosmic Rays","authors":"P. Velinov, S. Asenovski, L. Mateev","doi":"10.3897/arb.v35.e01","DOIUrl":"https://doi.org/10.3897/arb.v35.e01","url":null,"abstract":"The new model CORSIMA (COsmic Ray Spectrum and Intensity in Middle Atmosphere) is presented. The spectra and intensities of solar cosmic rays (SCR) from GLE (Ground Level Enhancement) 05 on 23 February 1956 and GLE 69 on 20 January 2005 at different altitudes are calculated. For this purpose, the operational CORSIMA model is applied. In the final version of the CORSIMA program, an approximation in 6 characteristic energy intervals of the Bohr-Bethe-Bloch function is used, including the charge decrease interval. Analytical expressions for the contributions of the energy intervals are provided. For the first time we present a quantitative and qualitative appreciation of the impact of Solar Cosmic Rays (SCRs) from the Solar Particle Events (SPEs) on the ionosphere and middle atmosphere (30 - 80 km). These altitudes are above the Regener – Pfotzer maximum. Unlike Galactic Cosmic Rays (GCR), the differential spectra of SCR essentially vary in time. The SCR fluxes also differ from each other during the different events. The spectrum and intensity behavior is explained considering the structure of the CORSIMA program. The calculation results are in agreement with the experimental data and show characteristic features of the propagation process for different altitudes and geomagnetic latitudes. The calculations are performed for geomagnetic latitudes 90o (cusp region). The development of this research is important for the processes and mechanisms of space weather.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SEM and EDX Study of Glassy Carbon Coatings after an Extende Stay on the International Space Station (ISS) 长时间停留在国际空间站后玻碳涂层的SEM和EDX研究
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e16
B. Tsyntsarski, Anna Bouzekova-Penkova, U. Szeluga, Georgi L. Georgiev, P. Tzvetkov, D. Teodosiev
{"title":"SEM and EDX Study of Glassy Carbon Coatings after an Extende Stay on the International Space Station (ISS)","authors":"B. Tsyntsarski, Anna Bouzekova-Penkova, U. Szeluga, Georgi L. Georgiev, P. Tzvetkov, D. Teodosiev","doi":"10.3897/arb.v35.e16","DOIUrl":"https://doi.org/10.3897/arb.v35.e16","url":null,"abstract":"Graphite samples covered with glassy-carbon layers, have stayed for 2 years and 4 months under different conditions - terrestrial conditions and on the International Space Station. The influence of outer space on glassy carbon coatings was studied by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Raman and infrared spectroscopy. The results show presence of some defects and heteroatoms (traces of O, F, Na, Cl) after staying in space, probably due to radiation and other effects. SEM data provide valuable information about the existence of undamaged glassy carbon layer with thickness of 20 μm. There are no structural changes in the layers of glassy carbon after stay in space. Data show that these materials can be successfully applied for electrical field measurements in ionosphere.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Retractable Undercarriage Design for a Quadcopter 四轴飞行器可伸缩起落架设计
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e12
K. Metodiev
{"title":"Retractable Undercarriage Design for a Quadcopter","authors":"K. Metodiev","doi":"10.3897/arb.v35.e12","DOIUrl":"https://doi.org/10.3897/arb.v35.e12","url":null,"abstract":"In the current paper, design of a foldable undercarriage for quadcopter is suggested and investigated. The deploying/retracting mechanism comprises a four-bar linkage. The mechanism lowermost configuration forms a kinematic lock. A solution to complex variable equations has been worked out to put together the mechanism geometry. In addition, a 3D CAD model has been developed to visualize the design better.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Opportunities to Optimize the Management of Aerospace Projects 优化航空航天项目管理的机会
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e17
N. Marinova
{"title":"Opportunities to Optimize the Management of Aerospace Projects","authors":"N. Marinova","doi":"10.3897/arb.v35.e17","DOIUrl":"https://doi.org/10.3897/arb.v35.e17","url":null,"abstract":"The creation and effective functioning of global satellite systems will allow to create an information base for solving problems related to the regeneration and rational use of natural resources, the creation of a single dynamic model of the Earth, including geological, climatic, biosphere, ecological and social factors. Great attention should also be paid to the problem of increasing the safety of human life in the conditions of the rapid development of intercontinental transport links.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three-Dimensional Modelling of A Bridge by Integrating Terrestrial and Aerial Photogrammetry Applying an Adapted Capture Method 应用自适应捕获法整合陆航摄影测量的桥梁三维建模
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e08
Veselina Gospodinova, Todor Todorov
{"title":"Three-Dimensional Modelling of A Bridge by Integrating Terrestrial and Aerial Photogrammetry Applying an Adapted Capture Method","authors":"Veselina Gospodinova, Todor Todorov","doi":"10.3897/arb.v35.e08","DOIUrl":"https://doi.org/10.3897/arb.v35.e08","url":null,"abstract":"Three-dimensional (3D) photogrammetric modelling is a contemporary remote sensing method for generating digital models with their specific appearance and texture, which are used in various areas of life. The modelling of complex geometry objects, such as masonry bridges, is not an easy task, because of their specific features (the presence of arches and various niches). This determines the choice of an adapted capture method according to the individual characteristics of the object. The paper presents research aimed at generating a highly accurate three-dimensional model of a bridge, by combining terrestrial and aerial photogrammetry. A low-cost unmanned aerial system (UAS) was used for capturing the upper side of the bridge. This significantly optimised capture time. But its capabilities do not allow to capture the bridge arches from the bottom upwards, nor to obtain an accurate model of the bridge railing. Because of this, a terrestrial survey was made with a digital camera, thus complementing the information required to generate a comprehensive model of the bridge. The integration of aerial and terrestrial capturing using low-cost cameras and systems, along with the application of modern algorithms for processing, allow to create precise, accurate, and detailed digital models. It is all very important for future conservation, restoration, adaptation, and socialisation of such type of objects which are monuments of culture.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling and Study the Distribution of Operator Attention in Controlling the Lateral Movement of an Unmanned Aerial Vehicle 无人机横向运动控制中操作人员注意力分布建模与研究
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e11
Peter Getsov
{"title":"Modeling and Study the Distribution of Operator Attention in Controlling the Lateral Movement of an Unmanned Aerial Vehicle","authors":"Peter Getsov","doi":"10.3897/arb.v35.e11","DOIUrl":"https://doi.org/10.3897/arb.v35.e11","url":null,"abstract":"The report examines the transients in the system \"Operator-Unmanned Aerial vehicle” in case of external disturbing influences. A model of the system in the system “MATLAB Simulink” has been developed, taking into account the distribution of the visual attention of the Operator. The parameter area of the transmission functions of the Operator is defined depending on the switching of attention.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Review of the Applications of Satellite Remote Sensing in Organic Farming (Part I) 卫星遥感技术在有机农业中的应用综述(上)
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2023-01-01 DOI: 10.3897/arb.v35.e18
Milen Chanev, Lachezar Hristov Filchev
{"title":"Review of the Applications of Satellite Remote Sensing in Organic Farming (Part I)","authors":"Milen Chanev, Lachezar Hristov Filchev","doi":"10.3897/arb.v35.e18","DOIUrl":"https://doi.org/10.3897/arb.v35.e18","url":null,"abstract":"Organic farming is a much more sustainable farming system than conventional farming. It is part of humanity's efforts to preserve biodiversity and provides healthy and safe food to humans. Remote sensing methods are widely used in agriculture. Their use will help the transition from conventional to organic farming. They can help farmers choose the most suitable place to build an organic farm. Remote sensing methods are a very powerful tool for weed control in organic farming. They can be used to determine the level of stress that crops experience. They provide a good opportunity to forecast yields on organic farms. Remote sensing methods can optimize fertilization on organic farms. They can be used to distinguish between organic and conventional agriculture, as well as to monitor biodiversity in agricultural areas. Remote sensing methods can help organic farmers make timely and adequate decisions in managing their farms.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70394896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation and Models of Onboard Secondary Power Sources for Aero and Space Devices 航空航天设备机载二次电源仿真与模型
IF 0.3
Aerospace Research in Bulgaria Pub Date : 2022-01-01 DOI: 10.3897/arb.v34.e09
P. Gramatikov
{"title":"Simulation and Models of Onboard Secondary Power Sources for Aero and Space Devices","authors":"P. Gramatikov","doi":"10.3897/arb.v34.e09","DOIUrl":"https://doi.org/10.3897/arb.v34.e09","url":null,"abstract":"This article discusses the design and evaluation of secondary power sources using simulation models. In a set of circuit experiments, the models allow various parameters to be measured and visualized and aid in the analysis of the results. The models were developed using \"NI MultiSim\" (for simulation experiments); \"Micro-Cap\" (for functional experiments) and \"LTspise\" (for process control). Simulation helps to understand the basic concepts, analysis and tuning of circuit processes and parameters of secondary power supplies.","PeriodicalId":40457,"journal":{"name":"Aerospace Research in Bulgaria","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70393921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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